Lead-acid battery



FIG. 1 is a front, top, and right side perspective view of a lead-acid battery showing my new design;

FIG. 2 is a rear, top, and left side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a right side view thereof; and,

FIG. 8 is a left side view thereof.

The broken lines shown in the figures are included for the purpose of illustrating portions of the lead-acid battery that form no part of the claimed design. 

CLAIM The ornamental design for a lead-acid battery, as shown and described. 